Unit includes four prewired 20A receptacles. Each duplex receptacle is wired as separate circuit. The duplex can be wired as a standard receptacle or isolated ground. Finish flange available in gray (GY), black (BK), ivory (VY) or brushed metal finishes in aluminum (AL), and brass (BS). Aluminum and brass flanges shipped with black slide cover. Brass flange also available with nonmetallic brass colored slide holder (AB). Aluminum flange also available with nonmetallic aluminum colored slide holder (AA). Includes Wiremold Open System unloaded adapters to accept four discrete keystone connectors from most manufacturers. Unit also includes Ortronics TracJack Mounting adapters and Ortronics Series II Communication Housing. Modular jacks sold separately. NOTE: Assembled with scrub water gasket. For use on tile or carpet floors. RC4 Series Poke-Thru Devices require a 4 (102mm) diameter hole. Not designed to work with bare concrete or terrazzo. Floor covering thickness 1/8 minimum. RC4 Assembled Unit-Brass Finish Flange Nonmetallic Colored Brass Slide Holder, 2-20A Duplex Standard or IG and Cat 6 Connectors.